Maybe I am just an idiot, but I cannot figure out how to install this adapter. I had a bench seats, and I bought the procar bucket kit. The adapter lines up with the two outer holes on each side, but the inside holes seem like they need to be drilled out. What do I use to actually secure them. It does not seem safe to just bolt them in and call it a day. I feel like I need a brace or something to bolt them in to. I cannot seem to find any information about this. I reached out to summit and they said "you have to fabricate them".